tty: vt: fix 20 vs 0x20 typo in EScsiignore

[ Upstream commit 0e6a92f67c8a94707f7bb27ac29e2bdf3e7c167d ]

The if (c >= 20 && c <= 0x3f) test added in commit 7a99565f8732 is
wrong.  20 is DC4 in ascii and it makes no sense to consider that as the
bottom limit. Instead, it should be 0x20 as in the other test in
the commit above. This is supposed to NOT change anything as we handle
interesting 20-0x20 asciis far before this if.

So for sakeness, change to 0x20 (which is SPACE).

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Fixes: 7a99565f8732 ("vt: ignore csi sequences with intermediate characters.")
Cc: Martin Hostettler <textshell@uchuujin.de>
Link: https://lore.kernel.org/all/ZaP45QY2WEsDqoxg@neutronstar.dyndns.org/
Tested-by: Helge Deller <deller@gmx.de> # parisc STI console
Link: https://lore.kernel.org/r/20240122110401.7289-4-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index b8f5bc19416d9913db644fa0d0df476d0f24a4a0..442579f087c7cd1b1175a32b198438cf893dd772 100644 (file)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -2515,7 +2515,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
                }
                return;
        case EScsiignore:
-               if (c >= 20 && c <= 0x3f)
+               if (c >= 0x20 && c <= 0x3f)
                        return;
                vc->vc_state = ESnormal;
                return;